Compute the dev status from the version number, and other minor tweaks.
Compute the dev status from the version number, and other minor tweaks.

7WebPages/coveragepy,larsbutler/coveragepy,blueyed/coveragepy,hugovk/coveragepy,jayhetee/coveragepy,hugovk/coveragepy,hugovk/coveragepy,larsbutler/coveragepy,blueyed/coveragepy,larsbutler/coveragepy,hugovk/coveragepy,larsbutler/coveragepy,blueyed/coveragepy,7WebPages/coveragepy,blueyed/coveragepy,7WebPages/coveragepy,nedbat/coveragepy,nedbat/coveragepy,7WebPages/coveragepy,blueyed/coveragepy,jayhetee/coveragepy,jayhetee/coveragepy,nedbat/coveragepy,nedbat/coveragepy,nedbat/coveragepy,jayhetee/coveragepy,hugovk/coveragepy,jayhetee/coveragepy,larsbutler/coveragepy